To find how much house you can really afford, start with the monthly amount your household can carry after every housing cost, then work backward to a price. The lender's approval amount is a ceiling set by loan risk, not a budget. In the illustrative example below, a $2,500 monthly housing budget supports a purchase price of about $246,000 at a 7.18% mortgage rate, far below the roughly $410,000 that a principal-and-interest-only calculation would suggest.
Key takeaways
- Principal and interest are only part of the bill. In the example, they are $1,500 of a $2,502 monthly cost; taxes, insurance, mortgage insurance, upkeep and utilities make up the other $1,002.
- Cash needed at closing is the down payment plus closing costs, which the CFPB says typically run 2% to 5% of the price. Emergency savings come on top.
- One percentage point more in rate cuts the affordable price in the example from about $246,000 to about $228,000.
- Taxes and insurance can change from year to year, so the payment you start with is not guaranteed to be the payment you keep.
How much house you can afford
The CFPB says an affordable home price depends on five factors: what you can pay monthly (after other debts such as auto and student loans), your down payment, the loan type, the interest rate and terms, and property costs such as taxes, insurance, utilities, maintenance and HOA fees. Starting from the monthly amount keeps the other four factors tied to what the household can actually pay; picking a price first and checking the budget afterward risks finding the shortfall only after closing.
Lenders approach the question from the other side. They compare your monthly debt payments, including the new housing payment, with your gross (pre-tax) monthly income, a figure called the debt-to-income ratio, and the CFPB notes that limits differ by loan product and lender. That ratio looks at debts, not at groceries, childcare, commuting or savings goals, which is why a budget built from your own take-home pay is the more useful starting point.
What a home costs each month
The CFPB's guidance on figuring out how much you want to spend lists the pieces of a monthly home payment: mortgage principal and interest, property taxes, mortgage insurance, homeowner's insurance, supplementary insurance such as flood insurance, and homeowners' association (HOA) fees. It adds maintenance, repairs and utilities as separate costs that vary with local rates, climate and the home itself.
Costs that are easy to miss
- Mortgage insurance. On a conventional loan, private mortgage insurance (PMI) may be required when the down payment is under 20% of the price. It can be paid monthly, as a one-time premium at closing, or both.
- Flood and disaster risk. Flood insurance is likely required in a FEMA Special Flood Hazard Area and generally is not covered by a standard homeowner's policy. The CFPB also suggests looking up a property's disaster risk before you buy.
- Maintenance. No single official percentage applies to every home. One simple budgeting method is to set aside a share of the home's value each year; the example below uses 1% as a placeholder assumption, not a rule. An older house with aging systems warrants a higher figure than a new one.
- Utilities. Electricity, gas, internet, water and sewer often change when you move, particularly if the new home is larger.
Property taxes and insurance are frequently collected through an escrow account, which adds them to the monthly payment. The CFPB points out that taxes and premiums can change from year to year, and the escrow payment changes with them. Without escrow, you still owe those bills directly, often in large lump sums.
A worked affordability example
The Freddie Mac Primary Mortgage Market Survey reported a 30-year fixed-rate average of 7.18% as of November 5, 2026, down from 7.24% the week before. The survey is released weekly on Thursdays and describes borrowers with good to excellent credit putting 20% down on a home purchase, so check the latest figure and then ask lenders for quotes: an individual rate depends on credit score, down payment and loan type, and a buyer with 10% down, as in the example below, may be quoted a different rate. The CFPB suggests using a rough estimate first and then updating it with a realistic interest rate.
Illustrative example. A household has a $2,500 monthly housing budget. All inputs below are assumptions chosen for round numbers, not typical values for any market.
Monthly cost = P&I + tax + insurance + PMI + maintenance + utilities
P&I = L × i / (1 − (1 + i)^−360)
L = price × (1 − down payment share)
i = annual rate / 12
- L is the loan amount; i is the monthly interest rate; 360 is the number of monthly payments on a 30-year loan.
- Assumptions: 10% down, 7.18% rate, property tax 1.0% of price per year, homeowner's insurance $1,800 per year, PMI 0.5% of the loan per year, maintenance 1.0% of price per year, utilities $350 per month, no HOA fees.
Solving for the price that makes the monthly cost equal $2,500 gives about $246,000, calculated by code rather than by hand:
| Item | How it is figured | Per month |
|---|---|---|
| Principal and interest | $221,400 loan, 7.18%, 30 years | $1,500 |
| Property tax | 1.0% of $246,000 / 12 | $205 |
| Homeowner's insurance | $1,800 / 12 | $150 |
| PMI | 0.5% of $221,400 / 12 | $92 |
| Maintenance set-aside | 1.0% of $246,000 / 12 | $205 |
| Utilities | assumed | $350 |
| Total | $2,502 |
The principal-and-interest line alone is $1,500, about 60% of the total. A buyer who spends the whole $2,500 on principal and interest alone could borrow about $369,000 at the same rate, which with 10% down points to a price near $410,000; at that price the full monthly cost would run far past the budget. With 20% down on the same $246,000 price, PMI generally drops away on a conventional loan, since the CFPB describes it as a possible requirement below 20% down, and the smaller loan plus no PMI brings the monthly cost to about $2,243, about $259 less. The extra $24,600 of cash would have to come from somewhere.
Cash needed before you get keys
The CFPB's Loan Estimate guide describes Estimated Cash to Close as the amount you will have to bring to closing: the down payment plus closing costs, minus any deposit already paid to the seller, any seller credits and other adjustments. Closing costs are typically 2% to 5% of the purchase price, not counting the down payment, though the actual amount varies. The same Loan Estimate guide notes that the first 6 to 12 months of homeowner's insurance premiums are usually paid at or before closing.
Illustrative example, continued. On the $246,000 purchase, 10% down is $24,600 and closing costs at 3% (a midpoint in the CFPB range) are $7,380, so cash to close is about $31,980. The CFPB also lists emergency savings of three to six months of expenses among the things to plan for. If all of this household's monthly expenses total $5,500, that is $16,500 to $33,000 to keep in savings after closing, separate from the $31,980.
Stress-testing the budget
A budget that works only if nothing changes is fragile. Rerunning the example with three separate shocks shows which ones matter most.
| Scenario (price held at $246,000) | Monthly cost | Change |
|---|---|---|
| Baseline | $2,502 | none |
| Rate 1 point higher (8.18%) | $2,655 | +$153 |
| Property tax up 20% (1.0% to 1.2%) | $2,543 | +$41 |
| Insurance up 30% ($1,800 to $2,340) | $2,547 | +$45 |
| All three together | $2,741 | +$239 |
The three-way shock adds about 9.5% to the monthly cost, and the rate is the largest single piece. Timing differs, too. On a fixed-rate loan the rate risk ends once the rate is set, while tax and insurance changes can keep arriving through escrow for as long as you own the home. On an adjustable-rate loan, the rate itself can also change after the initial period, so the rate row of this table stays relevant after closing.
The same budget works in reverse for rate shopping. Holding the $2,500 monthly budget fixed, the affordable price is about $265,000 at 6.18%, $246,000 at 7.18% and $228,000 at 8.18%. If the Loan Estimate you receive differs from your planning rate, rerun the numbers before making an offer. The CFPB also publishes sample rate scenarios that show how credit score, down payment, loan term and loan type shift offered rates and interest paid; its rates reflect data from April 1, 2025, so use it for the size of the differences, not for current rates.
This article is educational and uses hypothetical numbers; it is not personal financial advice, and a housing counselor or licensed professional can review your own figures.
Frequently asked questions
Does my pre-approval amount equal what I can afford?
No. The CFPB defines debt-to-income as monthly debt payments divided by gross monthly income, and its example of $2,000 in debt against $6,000 of income gives 33%. That ratio says nothing about utilities, upkeep, childcare or savings, so a pre-approval is best treated as an upper limit rather than a target.
Why can my payment rise on a fixed-rate loan?
A fixed rate locks principal and interest, but not the other costs in an escrow payment. The CFPB notes that property taxes and insurance premiums can change from year to year, and the escrow payment changes with them.
Do I need 20% down to buy a house?
Not always, but a smaller down payment on a conventional loan can add PMI. The CFPB says PMI may be required below 20% down, can be paid monthly, up front at closing or both, and shows up on your Loan Estimate and Closing Disclosure. On a conventional loan for a primary residence, PMI also does not last forever: under the rules the CFPB describes, you can ask to cancel it once the balance is scheduled to reach 80% of the home's original value (with conditions such as a good payment history), and it ends automatically at 78% if you are current. FHA and VA loans follow other standards, so compare the full cost of each option rather than the down payment alone.
What should I compare between the Loan Estimate and the Closing Disclosure?
Lenders must give you the Closing Disclosure at least three business days before your scheduled closing. The CFPB suggests comparing the loan amount, interest rate, estimated total monthly payment, closing costs and cash to close, and asking the lender to explain any significant change.
How much cash should I keep after closing?
The CFPB lists emergency savings, usually three to six months of expenses, among the costs to plan for when buying. Count that cushion separately from the down payment and closing costs, since both are spent at closing.
Checklist before you make an offer
- Set a monthly all-in housing budget from take-home pay, after your other bills and savings goals.
- Request Loan Estimates from several lenders and use the Estimated Total Monthly Payment and Estimated Cash to Close lines, not the rate alone.
- Look up the property's actual tax bill and get an insurance quote, including flood coverage if the property needs it.
- Add HOA dues, a maintenance set-aside suited to the home's age, and a utilities estimate based on its size.
- Rerun the budget at a rate one point higher and with taxes and insurance up, and confirm you can still carry it.
- Confirm that down payment, closing costs and three to six months of expenses can all be funded without borrowing.
Sources
- Primary Mortgage Market Survey, Freddie Mac (opened November 7, 2026)
- Figure out how much you want to spend, CFPB
- Understand the Loan Estimate, CFPB
- Understand the Closing Disclosure, CFPB
- What is private mortgage insurance?, CFPB
- When can I remove private mortgage insurance (PMI) from my loan?, CFPB
- What is an escrow or impound account?, CFPB
- What is a debt-to-income ratio?, CFPB
- Explore interest rates, CFPB
